| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| D/S Kronviken | 1904 | Norway | ||
| M/S Krosdøl | 1918 | Norway | Fire/Explosion, 1944-4-20 | |
| M/T Krossfonn | 1935 | Norway | Hijacked, 1940-6-26 | |
| D/S Kul | 1907 | Norway | ||
| Kumlefjord | Unknown | Norway | ||
| M/S Kunna | 1907 | Norway | ||
| D/S Kupa | 1917 | Yugoslavia | Torpedoed, 1942-5-15 | |
| D/S Kurdistan | 1928 | Great Britain | Torpedoed, 1941-12-12 | |
| M/S Kurefjord | Unknown | Norway | ||
| D/S Kutsang | 1922 | Great Britain | ||
| D/S Kuurtanes | 1906 | Finland | ||
| M/K Kvalsund (M 64 HØ) | 1939 | Norway | ||
| D/S Kvaløy | 1911 | Norway | ||
| D/S Kvaløy | 1889 | Norway | ||
| M/S Kvamsøy | 1922 | Norway | ||
| D/S Kvarven | 1904 | Norway | ||
| M/S Kveite | 1943 | Norway | ||
| M/B Kveldulf (M 15 H) | 1912 | Norway | ||
| D/S Kvernaas | 1918 | Norway | Torpedoed, 1940-2-17 | |
| M/S Kvikk IV | 1926 | Norway | ||
| D/S Kviteggen | 1923 | Norway | ||
| D/S Kvitsøy | 1878 | Norway | ||
| Kvitørn | Unknown | Norway | ||
| M/sleper Kvåsfjord | Unknown | Norway | ||
| D/S Kylegorm | 1914 | Great Britain |